Zeng group homepage

Recent activities

Feature Article "Syntheses, Properties, and Potential Applications of Multicomponent Magnetic Nanoparticles" is published in Advanced Functional Materials.

Dr. Seongjin Jang is a postdoc at the Stevens Institute of Technology. Congratulations, Seongjin!

Dr. Zeng gave an invited talk entitled “Magnetism of FePt Nanoparticles and Nanodot Arrays" at the APS March meeting in New Orleans. (3/12/2008)

Mr. Steven Kapturowski joined our group to do undergraduate research on vapor phase synthesis of semiconductor nanowires. (1/8/2008)

Dr. Zeng gave an invited talk entitled “Multi-component Nanostructures Combining Magnetic, Plasmonic, and Semiconducting Functionalities” at the Materials Research Society Fall meeting in Boston. (11/28/2007)

Mr. Hui Xing joined our group as an exchange student from Prof. Zhuan Xu’s group at Zhejiang University, China. (10/1/2007)

Our paper "FePt nanodot arrays with perpendicular easy axis, large coercivity, and extreamly high density" is published online in Applied Physics Letters.

Our paper “Magnetotransport in Fe3O4 nanoparticle arrays dominated by surface spin disorder” is published online in Physical Review B.

Dr. Zeng gave a joint colloquium at the Department of Physics and Department of Chemistry, Hong Kong University of Science and Technology. (7/6/2007)

Dr. Zeng gave an invited talk at the Data Storage Institute, Singapore, Singapore. (7/3/2007)

Dr. Zeng gave an invited talk at International Conference on Materials for Advanced Technology, Singapore, Singapore.(7/2/2007)

Dr. Zeng gave a colloquium at Department of Physics, the National University of Singapore. (6/28/2007)

Dr. Zeng gave a colloquium talk at the MINT Center, University of Alabama. (4/4/2007)

Wenchuan Earthquake, China 05,12, 2008

group photo

The research objective of our group is fundamental understanding of spin and magnetic properties in nanostructures. To achieve this goal, we are working on three broadly defined areas.

	1)	Nanostructure synthesis/fabrication. The approaches include chemical synthesis, vapor phase growth and thin film deposition.
	2)	Device fabrication. We combine bottom-up self-assembly with top-down lithography (both optical and e-beam lithography) to fabricate charge transport devices.
	3)	Magnetism and spin dependent charge transport studies.

Some of the issues we are trying to address are:

	·	How do size and surface effects influence the magnetization, magnetic transition and magnetic reversal in nanostructures?
	·	What is the interplay between spin dependent charge transport and Coulomb Blockade?
	·	Can we introduce room temperature ferromagnetism in conventionally nonmagnetic materials (e.g. in semiconductors)?
	·	Can we efficiently inject spin polarized carriers into semiconductors?
	·	Can we separate spin and charge transport for low power high speed electronics?

Our research is strongly driven by potential applications of nanostructures. We envision that one day some of the materials we develop will find applications in data storage, electronics, wireless communications and bio-medicine.

We welcome highly motivated students to carry out our challenging research projects. Please contact Dr. Zeng for details.

Research supported by National Science Foundation

Zeng group @ 2008